
Maintenance does not mean the same thing to all people. Operations managers, maintenance supervisors, and reliability engineers can be heard struggling to come to a common understanding.
Historical definitions of maintenance are quite different. “Maintenance” was originally the crime of unlawful abuse of legal procedures and attempts to influence courts. The other historical definition is providing money for operating or living expenses. As a term applied to machinery, maintenance is less than about 150 years old. Preventive maintenance as a literal phrase is even more recent. So who invented this phrase?
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